package com.haois.ws.common.util;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.Map;

/**
 * Created by RuiHaoZ on 2017/12/7.
 */
public class StringUtil {

    public static String convertStreamToString(InputStream is) {
        /*
          * To convert the InputStream to String we use the BufferedReader.readLine()
          * method. We iterate until the BufferedReader return null which means
          * there's no more data to read. Each line will appended to a StringBuilder
          * and returned as String.
          */
        BufferedReader reader = new BufferedReader(new InputStreamReader(is));
        StringBuilder sb = new StringBuilder();

        String line = null;
        try {
            while ((line = reader.readLine()) != null) {
                sb.append(line + "\n");
            }
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                is.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }

        return sb.toString();
    }

    public static String convertMapToUrlString(Map<String, String> map) {
        if (map == null) {
            return "";
        }
        StringBuffer sb = new StringBuffer();
        int i = 0;
        for (Map.Entry<String, String> stringStringEntry : map.entrySet()) {
            if (i != 0) {
                sb.append("&");
            }
            sb.append(stringStringEntry.getKey());
            sb.append("=");
            sb.append(stringStringEntry.getValue());
            i++;
        }
        System.out.println(sb.toString());
        return sb.toString();
    }
}
